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Blood pressure information measurement device and blood pressure information measurement method

  • US 9,532,720 B2
  • Filed: 03/28/2013
  • Issued: 01/03/2017
  • Est. Priority Date: 09/28/2010
  • Status: Active Grant
First Claim
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1. A blood pressure information measurement device for calculating an index of a degree of arteriosclerosis of a measurement subject as blood pressure information, comprising:

  • a detection member comprising a plurality of pressure sensors;

    a central processing unit that detects a pulse waveform by bringing the detection member into contact with an exterior of a measurement site of the measurement subject, wherein the central processing unit;

    acquires factor information for the degree of arteriosclerosis;

    converts the factor information to a coefficient α

    , the coefficient α

    being a function of the factor information;

    stores a first reference waveform and a second reference waveform;

    generates a waveform estimated as a blood flow waveform by compositing the first reference waveform and the second reference waveform using the coefficient α

    ;

    decomposes the pulse waveform into waveforms of an ejected wave and a reflected wave using the pulse waveform and the waveform estimated as the blood flow waveform; and

    calculates the index of the degree of arteriosclerosis from a relationship between the ejected wave and the reflected wave obtained by decomposing the pulse waveform; and

    a display that displays the index of the degree of arteriosclerosis.

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